Trestle.



M. HljHMAN. msm-z. APPLICATION FILED API-L'flg.

Patented Feb. 11, 1919.

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T. Jv

M. HERMAN.

TRESTLE.

'APPLICATION AFILED APR. 19| 19|?. 1,294,264. Patented Feb. 11, 1919.

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M. HERMAN.

TRESTLE. APPLICATION .FILED APR. 13 1917- 4 'SHEETS-safer 3.

Patented Feb. 11, 1919.

VI. HERMAN.

msm. APPLICATION FILED APR. I9, ISIT- Patented Feb. 11, 1919.

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I ffy/6722??" ZYX-@ey HL2/7771.@ 72/ MAIER HERMAN, 0F CHICAGO, ILLINOIS.

TRESTLE.

Specification of Letters Patent.

Patented Feb. 11, 1919.

Application filed April 19,v 1917. Serial N o. 163,110.

To all whom t may concern:

Be it known that I, MAER HERMAN, a citizen of Russia, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Trestles, of which the following is a specification.

My invention relates to new and useful Improvements in trestles or adjustable supports, for use by decorators, painters, paperhangers, calciminers, and the like, and is adapted for use for all kinds of work that requires the operator, or workmen to be supported at varying altitudes, and in rooms of contracted dimensions.

One of the objects of my invention is to provide a foldable and collapsible self-contained supporting structure, that may be used in place of a scaffold, or may be made to serve as supporting bents or horses in the organization of a scaffold.

Another object of my invention is to provide a trestle organization which may readily be folded or contracted into a relatively small compass so that it may conveniently be carried by theworkmen, from place to place, or from room to room, and which may quickly be set up and adjusted longitudinally and vertically to varying lengths and heights without the use of tools or parts, such as bolts, screws, Clamps or other similar separable devices, commonly used with adjustable trestles of this style of the usual construction.

Other and further objects of my invention will become readily apparent, to persons skilled in the art from a consideration of the following description when taken in conjunction with the drawings, wherein Figure 1 is a side elevation of the trestle, vertically extended and showing, in dotted lines,'the extent to which it may be elongated.

Fig. 2 shows a side elevation of the device when folded and completely contracted.

Fig. 3 shows an end elevation of the device with lower pairs of legs extended and laterally divergent.

Fig. 4 is a similar' view before said legs are laterally extended.

Fig. 5 is a plan view, longitudinally contracted.

Fig. 6 is an enlarged view of one of the extendible end sections showing the brace for holding the parts set up and showing the'brace and folding parts in dotted line position in the act of folding together.

Fig. 7 is a transverse section of a fragment taken on line l7 7 of Fig. 6, showing the manner of hinging the braces to each side of the table.

Fig. 8 is a plan view of a fragment of the extendible table.

Fig. 9 is a broken away portion of the extendible leg members.

Fig. 10 is a section taken on line 10-10 of Fig. 9. I Fig. 11 is a section taken on line 11-11 of Fig. 9.

Fig. 12 is a section taken on linel2-12 of Fig. 9.

In all the views the same reference characters are employed to indicate similar parts.

One embodiment of my invention is shown in the accompanying drawings and comprises, generally, a longitudinally extendible table, or top support 15, upon which the workmen may stand, composed ofaseries of, preferably, wooden strips or bars 16 to 20, inclusive, which are spaced-apart and held together at their respective ends by cross bars 21 and 22, respectively. Thisseries of strips or bars are substantially as long as the device in its most contracted condition. They are also held in spaced-apart relation, near their middle portions by spacing blocks 23-26, inclusive. Similar, but shorter strips, 27 to 30, at one end and strips, 31 to 34, inclusive, at the other end, providing separated end sections of the structure, alternate in position with the longer strips or bars with relation to which they may be freely and slidably moved, longitudinally. These shorter strips, constitute end sections 35 and 36, respectively. The outer ends of these shorter strips, or bars, are held together by bolts 37 that also pass through spacing blocks 38', substantially as wide as the strips or bars 16 to 2O inclusive, so that the latter bars may have free sliding movement with relation to and within the sections 35 and 36. The bolt 37 vpasses also through relatively thin metal strips or bars 38 and 39, one on each side of the respective sections 35 and 36.

A cross bar 40, turned down at each of its ends, as at 41, is secured to the inner ends of the bars 231-34, by screws 42. A stud 43 is riveted in the downturned end 41,

rat 65.

of each of the cross bars 40, one at each end, which stud passes through the metal bars 38 and 89, respectively, and also through the brace members 44, one of which is located on each side ofthe structure, thereby pivoting the brace members to the cross bars 40. A nut 45 overlies the washer 46 and serves to hold the parts together.

Parallel legs 47 and `48 are Vpreferably made of angle iron, each having its inturned flange 49 cut away, near its upper end, to provide ahinge member 50, which is perforated for the bolt 37 upon which it may be turned, in the act of folding, as shown in Fig. 6. Abrace member 54, is hinged, one to each of the leg members 47 and 48, near `thezrespective bottom ends thereof, and is also hinged, as at 55, to the brace member 44. A stop 56 is provided `on one of the brace members, so as to hold them in alinement and prevent thembein'g folded in the opposite direction when the device is extended.

A transversely extending, wide, relatively thin member 57 ,composed of iron or steel, has its ends 58 bent around the longitudinal llanges of the legs 47 and 48 to serve as a Vguide within which the legs are freely movable. Hinged to the ends of the cross member 57 as at 59, are two legs 60 and 61, made preferably of angle iron, and adapted to snugly overlie the legs 47 and 48, respectively, when the legs v6() and 61 occupy a parallel position, as shown in Fig. 4.

A brace member 62 is pivoted to the leg G0, at 63, -and te another brace member 64, The'br'ace member 64 is pivoted 'to the leg 61, at 66. Another similaibrace member 67 is pivoted to the leg 61, at 68,

.and to another brace member 69, at 7 01 and `themember 69 is pivoted to the leg 60, at 71.

When these brace members are in the positions shown in Fig. 3, the legs and 61 are retained in divergent positions thereby, in order to provide a-larger base for the structure. To more securely hold the leg Yin the extended, or divergent positions, as shown in Fig. 3, I may provide other braces72, hinged at 71 to leg 60 and to another brace member 7 3, which is hinged at 66, to leg `61, the two brace members being hinged together, as at 74. The brace members 64,

f69'and `72 are 'provided with stops 75 to holdthese members in alinement lwith their `respective associate members, when the legs "arethereby moved laterally andthe associate brace members are thereby straighttened 4fout.

Thelegs 47 and Y48, which bear the table l5, are vertically adjustable, with respect totheflegsfO--and 61. Theyare held in adjusted 'position by dogs 76 and 77 that are piroted to the crossmembers 57, as at 78 and 79, respectively. The ends of the dogs v76 and 77 engage notches 80 and 81 that are spaced apart on the respective legs. The dogs are held yieldingly in the notches by springs 82 and 83, respectively. 84 is pivoted to each of the dogs, as at h85, and each of the links is provided with an outturned end 86, which serves as a thumb button to draw the .links together to `cause the upper ends of thedogs 76 and y77 'to be disengaged from the respective notches. The `outturned portion of the link passes through notches 88 made in the cross member 57. When the thumb buttons 86 Vare released, the springs 82 and 83 press the respective ydogs into contact with the respective legs 47 and 48. A plate 89 serves las a partial housing and guide for the dogs and links, within which are contained the springs that yieldingly press the dogs into contact with the legs 47 and 48.

Assuming for example, that the device is folded in its most contracted dimensions, as shown in Fig. 2. In order to set up the device for use, the leg structure at each end, is opened out at right angles tothe top or table structure, as shown in Fig. 1, the legs 60 and 61 are then laterally extended in divergent positions and thus held'byi the braces, as shown in Fig. 3. The supports or Vlegs at each end may Vthen be ymoved longitudinally of the table, intoany intermediate position, 'between the full lines and dotted lines in Fig. 1, to extend the longitudinal dimensions of lthe device, after which the table 15, which is directly .supported by the pairs of legs 47 and 48 may be vertically moved with respect to the legs -60 and 61, by withdrawing thedogs 76 and 77 from the notches in the legs 47 `and 48, by pressing the buttons 86 together, and liftingl the table and 'the supporting legs that are directly hinged thereto and thus the structure may be made to accord with any dimensions within its capacity.

While I have herein shown a single-embodiment of my invention, for the purpose of clear disclosure, it will be manifest to persons skilled in the art, that Amany changes may be made in the general form, arrangement and disposition of theparts Within theV scope ofthe appended claims.

Having described myV inventiomwhat I claim is Y 1.V A structure of 'the character described, comprising atop member Shaving .movable end sections, wherebythe top may be 4ex- Alink l extend the bottom pair of legs independently of said first mentioned legs, and braces to hold the parts in extended position.

2. A structure of the character described comprising a longitudinally extendible top member having two like end sections; a pair of substantially parallel legs hinged to the outer ends of each end section; a guide for each pair of legs to permit vertical adjustment thereof; another pair of legs hinged to each guide; means to laterally extend the lower ends of said hinged legs; braces to hold the legs extended, and braces between the top member and the leg structure to hold said leg structure at right angle relation to said top member.

3. A structure of the characterdescribed comprisinga longitudinally extendible top member having two like end sections; a pair of substantially parallel legs hinged to the outer end of each endlsection; a cross bar having longitudinally sliding engagement with each pair of said legs; another pair of legs, hinged to each 'cross bar so as to permit lateral extension of the lower ends of said legs and means for locking said cross bar in adjusted posit-ion relative to said first mentioned leg.

4. An apparatus of the character described including in combination, a top member having a member extensible relative to each end, a pair of legs pivoted to each end section, a guide member slidably arranged for vertical adjustment relative to each pair of legs and having means for holding` the same in adjusted relation thereto, supplemental legs hingedly connected to each end of each guide member and means for holding said supplemental legs in divergent relation to each other and to said first mentioned legs.

5. An apparatus of the character described including in combination, a top member, a pair of legs pivoted to each end thereof, said legs being formed of angle irons, a guide member slidably arranged for vertical adjustment relative to each pair of legs, said guide member including a plate having an extended straight portion with its end bent around the longitudinal flanges of said legs, so as to serve as a guide within which said legs move, a leg member hinged to each end of said guide member, said additional leg members being also formed of angle irons so as to snugly overlie the rst mentioned leg when in folded position and means for holding said additional legs in diver-ging relation relative to each other and to said irst mentioned leg.

6. A structure of the character described comprising a longitudinally extendible top including a pair of like end sections composed o a series of spaced bars and an intermediate section composed of a series of spaced bars, the bars of the intermediate section lying between the adjacent bars of the end sections, spacing blocks between said bars, bolts passing through the outer end of the bars of the end sections, on each side of the end sections, the said bolts passing through one end of these strips, a cross bar secured to the other end of the bars of the end sections and turned down over the edges thereof, being positioned within the strips, studs secured to said ends of said cross bars and passing through said strips, leg members pivotally mounted on said bolts and brace members pivotally mounted on said studs and connected to said leg members.

In testimony whereof I hereunto set my hand in the presence of two subscribing witnesses.

MAER HERMAN. In the presence of- FORE BAIN, MARY F. ALLEN.

Copies ot this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Wilmington, D. C. 

